In that case you're assuming that 80% of engineers should be male - which is a different argument than what was put forward.
http://newsroom.ucla.edu/stories/cracking-the-code:-why-aren...
https://www.computerscience.org/resources/women-in-computer-...
https://www.usnews.com/news/data-mine/articles/2016-10-20/st...
http://newsroom.ucla.edu/stories/cracking-the-code:-why-aren...
https://www.computerscience.org/resources/women-in-computer-...
https://www.usnews.com/news/data-mine/articles/2016-10-20/st...